MEDIUM
10th CBSE
IMPORTANT
Earn 100

An object 3.0 cm high is placed perpendicular to the principal axis of a concave lens of focal length 15.0 cm.
The image is formed at a distance of 10.0 cm from the lens. Calculate: size and nature of the image formed.

Important Questions on Light - Reflection and Refraction

EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 11
An object 20 cm tall is placed on the principal axis of a convex lens. Its 30 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 12
An object 30 cm tall is placed on the principal axis of a convex lens. Its 10 cm tall inverted image is formed on the screen placed at a distance of 15 cm from the lens. Calculate the focal length of the lens.
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 14
A convex lens of focal length 20 cm produce a magnified virtual as well as real images. Is this a correct statement? If yes, where shall the object be placed in each case to obtain these images?
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 15
Under what condition in an arrangement of two plane mirrors, incident ray and reflected ray will always be parallel to each other, whatever may be angle of incidence. Show the same with the help of diagram.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 1
You are required to form an upright image which is: (i) enlarged, (ii) diminished by using a lens. State the nature of the lens in each case and draw a neat ray diagram in support of your answer.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 2
State the lens formula.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 2
State whether u, v and f are positive or negative, when: the lens is convex and the image formed is real.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 2
State whether u, v and f are positive or negative, when: the lens is convex and the image formed is virtual.